T-Mobile is taking this Un-carrier program to a new level with a free unlimited international offer.

T-Mobile unveiled the third phase of its Un-carrier plan yesterday (called Un-carrier 3.0), saying that it will now offer a free unlimited international text and data plan. This plan is an extension of the home data coverage for most Simple Choice customers, and it will include over 100 countries at no extra fees.

"The cost of staying connected across borders is completely crazy," said John Legere, president and CEO of T-Mobile US, Inc. "Today's phones are designed to work around the world, but we're forced to pay insanely inflated international connectivity fees to actually use them. You can't leave the country without coming home to bill shock. So we're making the world your network - at no extra cost."

Simple Choice customers will get unlimited data and texting in more than 100 Simple Global countries around the globe, and will pay a flat rate of 20 cents per minute for voice calls in these countries. No need for activation or anything; it comes automatically for those on the Simple Choice plan.

Legere used AT&T to demonstrate the amount customers will save with T-Mobile over AT&T. According to Legere, if a customer uses 72MB of data, makes 32 one-minute calls back home, and sends 36 text messages a day on AT&T without an international plan, the cost would be $1,150 in Canada and $1,500 in Europe. With T-Mobile's new plan, it would be $6.40.

While these are significant savings, don't expect quick speeds -- T-Mobile Chief Marketing Officer Mike Sievert said the average speed customers would get abroad is 128 kilobits a second.

However, this is T-Mobile's chance to rake in some extra cash. It will offer "speed packs," which boost international speeds to that of T-Mobile's HSPA+ networks. Customers can pay $15 for one day of high-speed data up to 100MB; $20 for one week at 200MB, and $50 for two weeks and 500MB.

T-Mobile also added that trips abroad can only last six weeks.

The new international offering will take effect starting October 31.

T-Mobile also introduced a $10 Stateside International Talk and Text plan for U.S. customers calling other countries. The plan includes calls for 20 cents (or less, depending on the country) and free unlimited calls to landlines in 70 of those Simple Global countries.

T-Mobile has been pushing aggressive deals all year, starting with the eliminated contracts for reduced cell phone plans in March and an early phone upgrade program in July.

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